A triangle has no right angles when it is not a right angle triangle as for example as in the case of an equilateral triangle that has 3 equal 60 degree angles.
3
It has 3 angles
a right triangle
Every triangle have 6 main parts: 3 sides and 3 angles. On a right triangle one of the angles has to be a right angle, meaning it has a 90 degree angle.
3
No, not with two right angles. All the angles in a triangle add up to 180, you have that in two angles.
Any triangle that is not a right angle triangle
a triangle a triangle
No, a triangle has to have a combined sum of the 3 angles at 180 degrees, a right angle is 90 degrees. It is impossible to have a 90,90,0 triangle
No, a triangle has to have a combined sum of the 3 angles at 180 degrees, a right angle is 90 degrees. It is impossible to have a 90,90,0 triangle
It is impossible to have a triangle with 3 right angles. It is possible to draw a triangle with three right angles on the surface of a sphere: www.metacafe.com/watch/769025/270_degree_triangle_yes_3_right_angles